Some funky stretching going on in character animation
Problem fixed... False alarm!!!, I double even triple checked my mesh weights, (but only in my main mesh, since the stretching looks gray), and I have the eyes and shoes as a separate mesh, all these three parented to my armature, finally I double-checked the eyes and they were parented to the armature with an orangy tone, not totally red, after I weight painted them in full red the problem is fixed... Anyway, the weird thing is that I was not able to see the stretching in the viewports, maybe that would have given me a clue of where the problem was.